Experiences of LNG Fuel supply to AidaPrima

Transcription

1 Version / Revision # / date Experiences of LNG Fuel supply to AidaPrima 18 October 2016

2 Carbon reduction The first of our 2020 sustainability goals 2020 Goals Page 2020 Goals 1

3 Why LNG? When we considered the environmental benefits of LNG in combination with recent changes in regulatory and supply chain factors, it all aligned in favor of building the world s first LNG-powered cruise ships. Benefits of switching from Marine Diesel to LNG 25% reduction in carbon emissions % reduction in particulate matter 85% reduction in nitrogen oxides Zero sulfur dioxide emissions 2

4 Carnival s LNG strategy In 2015, AIDAsol was the first cruise ship in the world to be supplied with electricity from an LNG-Hybrid barge The AIDAprima was delivered in 2016 and uses LNG in port We have seven LNGpowered next-generation cruise ships on order By 2019 we will be the first cruise company to use LNG on the open sea and in port when our first LNG-powered ship enters in to service 3

5 AIDAprima - Technical solution One main engine is dual fuel, with on-board vaporiser and gas conditioning. No on-board LNG storage Pressure Build Up instead of mobile pump unit 6.5 to 8 bar Pressure build up is installed on truck 7-9 bar in operation about 2 bar entering port Use of pressure build-up results in reduction of possible sources of release next to the vessel (less flange connections, simpler operation) Silent and automated LNG transfer process Risk contours created for transfer via pressure-build up no greater than pumped system considering 5 sec ESD Double walled hoses Quick dry and break away couplings on loading and vent lines All valves fail safe close Reliable, safe and practical fuelling system 4

6 AIDAprima - Technical solution ENHANCED SAFETY FEATURES Truck protected from collision on quayside by concrete blocks No operation above the Fuelling Arrangement ESD Buttons at Fencing / Truck / Vessel 5 sec response Double walled LNG transfer hose with inter-barrier monitoring Gas detection at cabinet of the truck / onboard Emergency release coupling (messenger wire for drift protection) Vent system of truck connected to ship vent system Regular Checks and Maintenance Hose handling procedures Training of truck driver and Crew permanent manning of transfer process Control of sources of ignition Checklists Hose chute 5

7 AIDAprima - Technical solution SAFETY ZONE CONCRETE BLOCKS TO PREVENT ACCIDENTAL COLLISION AND FENCING TO PREVENT UNAUTHORISED ACCESS 6

8 AIDAprima - Technical solution HANDLING OF TRANSFER HOSE 7

9 AIDAprima - Technical solution CONNECTIONS BETWEEN SHIP AND CONTAINER 8

10 Experiences of LNG Fuel supply to Aidaprima HAZARD ANALYSIS Hazid carried out early in project with Port Authorities Detailed Risk Analysis have not shown large credible release scenarios of LNG due to the safeguards (5s ESD, double walled transfer hose, robust impact protection PRV of truck connected with vent system of the vessel etc) Atex zones have been evaluated by third party and within the safety zone Safety Zone (as per ISO /TS18683) has been evaluated on a deterministic risk based approach Class and Flag approval with no restrictions during fuelling operation 9

11 Experiences of LNG Fuel supply to AidaPrima APPROVAL CONCERNS QRA have different acceptance criteria by country should be agreed prior to analysis Different approval authorities and stakeholders by country to be identified at early stage Different documentation requirements (including language) - to be identified at early stage Interpretation of ISO /TS18683 required due to lack of clarity on how define reasonable basis for risk assessment (ie a combination of worst case parameters will result in unreasonable safety distances) parameters to be agreed at early stage 10

12 Experiences of LNG Fuel supply to AidaPrima 11